I could ask questions all day long about a yc sled only doing 113. In my post I say "good running". ANY sled, stock or otherwise, can be a pooch on any given day. A "stock" apex should run 113 all day in decent conditons. One of the issues with the yamacharger seems to be that it is fairly easily (if not correctly) installed by the owner/buyer. It is one thing to mod a sled and another to mod one and have it run better. One of the problems with the YC install is that everything needs to be sealed up well. That thing is only making about 2psi of boost at max revs. If there is even the slightest air leak between the compressor and throttle bodies, guess what, no extra performance.
As most people already know, when making comparisons, they need to be on the same day or, at the very least, as similar of condions as posible if any reasonable comparisons are gonna be made.